CN114075956B - Visual sintering-free flat sand filling model device and method - Google Patents
Visual sintering-free flat sand filling model device and method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 22
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- 239000010959 steel Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
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- 238000013461 design Methods 0.000 claims description 5
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 56
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to a sand filling model, in particular to a visual sintering-free flat plate sand filling model device and method. The device comprises a flat sand filling model, a model stamping device and a model fixing bracket; the flat sand filling model comprises a flat model main body and a model upper cover plate; the model stamping device comprises a motor, a stamping rotating shaft, a control box, a stamping steel plate and a stamping device shelf; the model fixed bolster includes support, model anchor clamps, support upper end left and right sides sets up the axis of rotation, the pivot is connected at model anchor clamps left and right both ends, and the inclination is adjusted in the pivot connection. In the simulation experiment, the device can avoid sintering and gluing operations, the model can be repeatedly used, the practicability is high, and the defect of the existing sand filling model is overcome.
Description
Technical Field
The invention relates to a sand filling model, in particular to a visual sintering-free flat plate sand filling model device and method.
Background
In the development process of oil and gas fields, oil reservoir physical simulation experiments are always an important means for oil science and technology staff to know and master oil-water seepage rules in oil reservoirs, and how to improve the similarity degree between indoor physical simulation experiments and actual mining fields is always a breakthrough difficult problem for scientific researchers. In the safety and cost consideration, the related technology application firstly carries out experiments through a sand filling model to obtain required data, and particularly, a plurality of means or technologies are needed to be combined to improve the recovery ratio for the research of the later-stage plane and longitudinal heterogeneity of the water flooding of the integral oil reservoir, so that higher requirements are put forward for the experiments.
In the physical simulation experiments related to the petroleum industry at present, a sand filling model device is often adopted to simulate stratum core flow experiments. For example, chinese patent No. CN105781509B discloses a seepage experimental system for a flat-plate sand-filling model, which comprises a sand-filling model entity unit, a resistor acquisition unit, a pressure field acquisition device, a measurement unit, a valve unit, a computer, a fluid pipeline, a sand-filling pipe, a vacuum pump, a peristaltic pump, an electrode point, a resistor data acquisition unit, and a bridge instrument; the system can accurately measure and simulate the change of the formation resistivity and realize two-dimensional resistance imaging, effectively perform pressure field data through pressure acquisition, and analyze and simulate the influence of the distribution of the horizontal well and the vertical well on the formation oil production efficiency.
The Chinese patent CN205591902U discloses a novel sand filling device, which comprises a sand filling device main body and a support frame, wherein the support frame is hinged with the sand filling device; the support frame comprises a support main body and an arc-shaped plate; the sand filling device is hinged in the arc-shaped plate; the support body includes a lower support seat and a wheel. The device can be used for realizing a three-layer heterogeneous physical model, and can simulate different permeability reservoir displacement characteristics and evaluate physical simulation experiments of the profile control system effect.
The Chinese patent No. 107831052B discloses a special large-diameter sand filling model device and a method for physical simulation experiments, wherein the device comprises a main pipe body, the main pipe body is a through pipe body, a left pipe end sealing cover and a right pipe end sealing cover are respectively plugged at the left end and the right end of the main pipe body, a left screen pressing plate is arranged on the inner end surface of the left pipe end sealing cover, thick and thin screens are respectively arranged between the inner end surface of the left pipe end sealing cover and the left screen pressing plate, a right screen pressing plate is arranged on the inner end surface of the right pipe end sealing cover, and thick and thin screens are respectively arranged between the inner end surface of the right pipe end sealing cover and the right screen pressing plate; and the main pipe body is provided with an analog injection and production well hole or a pressure measuring hole. The device can simulate the characteristics of the edge water and the bottom water of an actual oil reservoir and simulate the characteristics of the artificial gas top drive of a mine field.
However, the above and the conventional plate physical simulation experiments generally prepare a model according to the need, then forge and compact, sinter and shape at high temperature, and coat epoxy resin glue on the outer surface for encapsulation, but the operation mode has limitations, the high temperature sintering easily causes the change of pore structure and wettability, the epoxy resin is not environment-friendly, and the transparency of the model after encapsulation is poor for observation. The sintering model can only be used once, and a large amount of manpower and material resources are wasted.
Therefore, it is necessary to provide a visual sintering-free flat sand-filling model device.
Disclosure of Invention
The invention mainly aims to provide a visual sintering-free flat sand filling model device and a visual sintering-free flat sand filling model method. In the simulation experiment, the device can avoid sintering and gluing operations, the model can be repeatedly used, the practicability is high, and the defect of the existing sand filling model is overcome.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The invention provides a visual sintering-free flat sand filling model device, which comprises a flat sand filling model, a model stamping device and a model fixing bracket;
The flat sand filling model comprises a flat model main body and a model upper cover plate; the plate model main body is a rectangular plate, and a groove is formed in the plate model main body; the upper cover plate is arranged on the groove; the two sides of the flat sand filling model are respectively provided with an analog injection and production well hole or a pressure measuring hole;
The model stamping device comprises a motor, a stamping rotating shaft, a control box, a stamping steel plate and a stamping device shelf; the punching rotating shaft is connected with the motor and the control box respectively; the lower end of the stamping rotating shaft is fixedly connected with the stamping steel plate through a nut, and the rotating shaft is lifted to drive the stamping steel plate to move up and down; the stamping device shelf is fixed below the bracket; during stamping, the filled flat model main body is arranged on a shelf of a stamping device, and the upper model cover plate is arranged below the stamping steel plate;
The model fixing support comprises an inclination angle adjusting handle, gear rotating shafts, a model fixing shelf and a support, wherein the gear rotating shafts are arranged on the left side and the right side of the upper end of the support, the model fixing shelf is arranged on the support, and the gear rotating shafts are connected with the inclination angle adjusting handle; the flat sand filling model is fixed on the model shelf by bolts.
Preferably, the upper cover plate of the model is provided with an injection well hole.
Preferably, the upper and lower surfaces of the flat sand filling model are respectively provided with a plurality of fixed steel plates and a connecting support frame, each steel plate is vertically arranged with the long side of the flat sand filling model, a plurality of bolt holes are arranged on the steel plates, and the steel plates are fixed with the flat sand filling model through bolts; the connecting support frame is vertically connected with the outer side of the steel plate through bolts.
Preferably, the stamping steel plate is a rectangular steel plate, and the size of the steel plate is larger than that of the upper cover plate of the model; a plurality of bolt holes are arranged on the punching steel plate.
Preferably, the bottom of the model fixing support is provided with a roller.
Preferably, the simulated injection well is provided with a simulated injection well, and the pressure measuring hole is provided with a pressure measuring device.
Preferably, the well bore is fitted with coarse and fine screens, respectively.
The invention also provides a using method of the visual sintering-free flat sand filling model device, which comprises the following steps:
and (3) a step of filling sand into the flat model in a blocking manner according to the requirement of non-uniformity of the model plane, dividing the model into a plurality of strips according to the design, placing partition boards between different strips, filling one strip and then filling another strip, completely filling out the extracted partition boards, and carrying out preliminary leveling on the model.
And placing the filled model on a shelf of a model stamping device, fixing an upper cover plate of the model below a stamping steel plate, driving the cover plate to descend by a starting motor, adjusting the position of the model to be aligned with the cover plate, taking down the cover plate from the stamping steel plate after the cover plate is pressed into a groove, and fixing the cover plate and the model through a fixed steel plate. Adjusting the motor to the required power to drive the stamping steel plate to repeatedly stamp the model;
And (3) placing the model pressed in the previous step on a model fixing frame to perform experiments.
Preferably, the rotation angle of the model is adjusted by the model inclination adjusting handle and the gear rotating shaft.
Preferably, a simulated injection well is arranged in a simulated injection well hole, a pressure measuring device is arranged in a pressure measuring hole, the oil displacement effect and the flow rule of the water flooding process are simulated, and the mechanism of improving the petroleum extraction degree by the water flooding variable flow line under the condition of non-uniformity of the oil reservoir plane is researched.
Compared with the prior art, the invention has the following advantages:
The model device can simulate the combination condition of different permeability of an actual oil reservoir plane and a longitudinal direction, can simulate the combination of positive and negative rhythm oil reservoirs and different permeability strip planes, is flexible in proportion, does not need high-temperature sintering, fully reserves micro-pores, does not change the filled model due to high temperature, and can fully consider the clay content and the property in the model to keep the consistency of actual oil reservoir rocks.
The surface is not required to be coated with epoxy resin for sealing, so that the method is safe and environment-friendly. The sand filling is removed after one experiment is completed, the model shell can be used repeatedly, the device is simple in structure, convenient to operate, time-saving and labor-saving, high in practicability and applicable to conventional simulation of the general oil reservoir injection and production process.
Through wettability control technology, experimental models of different wetting types can be obtained, and mixed wetting states can also be realized.
The model stamping device can control the compaction degree of the sand filling model according to the requirement, and the special sand control shaft method reduces the sand discharge probability of the model in the displacement experiment process.
The sand filling model is fixed on a model fixing support through bolts, rolling gears are arranged on two sides of the model fixing support, the model can rotate by 360 degrees, and the inclination angle of the model can be controlled by adjusting a rotating shaft of the model through a model inclination angle adjusting handle.
The visual flat sand filling model device can be used for simulating different permeability strip distribution and well pattern distribution under actual oil reservoir stratum conditions, and can directly observe the oil-water change rule in the laboratory process and improve the petroleum recovery ratio; and monitoring the pressure change condition in the whole injection and production process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a top view of a flat panel sand pack mold according to an embodiment of the present invention;
FIG. 2 is a side view of a flat panel sand pack according to an embodiment of the present invention;
FIG. 3 is a schematic view of a mold stamping apparatus according to an embodiment of the present invention;
fig. 4 is a schematic view of a model fixing bracket according to an embodiment of the invention.
In the figure: 1-a flat plate model body; 2-a model upper cover plate; 3-fixing the steel plate; 4-bolts; 5-simulating an injection well; 6-connecting the supporting frame; 7-a motor; 8-punching a rotating shaft; 9, a control box; 10-stamping a steel plate; 11-a stamping device shelf; 12-tilt adjustment handle; 13-a gear shaft; 14-a model fixed shelf; 15-bracket and 16-pulley.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, and/or combinations thereof.
In order to enable those skilled in the art to more clearly understand the technical scheme of the present invention, the technical scheme of the present invention will be described in detail with reference to specific embodiments.
Example 1
As shown in fig. 1 to 4, a visual sintering-free flat sand filling model device comprises a flat sand filling model, a model stamping device and a model fixing bracket. The flat sand filling model consists of a flat model main body 1, a model upper cover plate 2 and a fixed steel plate 3; a bolt 4; the simulated well bore 5 is composed, the length of the model main body is 100mm, the width is 76mm, and the wall thickness is 20mm; and 6 simulated injection and production wellholes are evenly distributed on two sides of the broadside, and the upper cover plate simulates an actual injection and production well pattern of an oil reservoir to arrange the injection and production wellholes.
The flat sand filling model body 1 is horizontally placed, the model is divided according to experimental requirements, the model is divided by partition plates, the stirred sand is filled into corresponding positions in a divided mode, when the sand surface reaches a simulated injection and production well hole or a pressure measuring hole, a simulated injection and production well or a pressure measuring device is carefully installed and fixed, the partition plates are taken out after filling, and the sand surface is leveled and is subjected to preliminary compaction.
The model stamping device comprises a motor 7; punching a rotating shaft 8; a control box 9; stamping a steel plate 10; a stamping device shelf 11; the mould is placed on a shelf 11 of a stamping device, an upper mould cover plate 2 is fixed below a stamping steel plate 3, a rubber sealing ring is additionally arranged at the bottom of the upper mould cover plate, a starting motor 7 drives the upper mould cover plate to descend to the upper part of the mould to stop the machine, whether the mould is aligned with the upper mould cover plate or not is observed, the upper mould cover plate 2 is slowly pressed into the mould by the starting motor 7 again, and the power of the motor is increased to the maximum pressing time of 5 minutes. The bolts connecting the upper mold plate 2 and the punched steel plate 10 are removed, and the punched steel plate 10 is lifted.
Four fixed steel plates 3 are respectively arranged on the upper surface and the lower surface of the flat sand filling model, and fixing the steel plates for the model is more beneficial to guaranteeing the compaction degree of model manufacturing. And (5) installing connecting bolts, fixing the steel plates on the upper surface and the lower surface, and screwing the bolts. And starting the motor again, so that the stamping steel plate rapidly descends the stamping model, keeping the steel plate pressed for 5 minutes, and continuously screwing the connecting bolt. The stamping step is repeated until the connecting bolt can not rotate any more.
In the scheme, the simulated injection and production well 5 is arranged in the model from the upper cover plate simulated injection and production well hole, the simulated injection and production well is also arranged on two sides of the model, the length of the simulated injection and production well can be changed according to the experimental design requirement, and the well hole is subjected to sand prevention treatment; the simulated injection well position can also be used as a pressure measuring point; the well spacing can also be controlled by adjusting the bending of the well bore.
The model fixing support comprises an inclination angle adjusting handle 12, a gear rotating shaft 13, a model fixing shelf 14 and a support 15. The flat sand filling model is fixed on the model shelf by bolts, and then two nuts are screwed in the vertical direction to fix the flat sand filling model. The model fixing shelf is 匚 -shaped.
Gear rotating shafts 13 are arranged on two sides of the model fixing frame, the model can rotate 360 degrees, the gear rotating shafts 13 can be fixed by screwing the model inclination angle adjusting handle 12, and the inclination angle of the model is controlled by adjusting the gear rotating shafts 13; the stable structure of the bracket 15 can ensure the operation safety in the process of fixing the model, and the bottom installation roller 16 can push and lock the fixed position of the roller.
The visual flat sand filling model device improves the traditional flat sintering model, the length and bending degree of an injection well can be adjusted to control the injection well distance, the inclination angle of the model can be controlled, the visual flat sand filling model device is verified through an indoor physical simulation oil displacement experiment, and the development condition of an oil reservoir under various conditions can be met, so that the actual similarity and adaptability with a mine field are greatly improved, and the visual flat sand filling model device has good on-site guidance significance.
The application method of the visual sintering-free flat sand filling model device comprises the following steps of:
and (3) a step of filling sand into the flat model in a blocking manner according to the requirement of non-uniformity of the model plane, dividing the model into a plurality of strips according to the design, placing partition boards between different strips, filling one strip and then filling another strip, completely filling out the extracted partition boards, and carrying out preliminary leveling on the model.
And placing the filled flat sand-filling model on a shelf of a model stamping device, fixing an upper model cover plate below a stamping steel plate, driving the upper model cover plate to descend by a starting motor, adjusting the position of the model to be aligned with the upper model cover plate, taking down the upper model cover plate from the stamping steel plate after the upper model cover plate is pressed into a groove, and fixing the upper model cover plate and the model through a fixed steel plate. Adjusting the motor to the required power to drive the stamping steel plate to repeatedly stamp the model;
And (3) arranging the model pressed in the previous step on a model fixing frame for experiment, wherein in the step, the rotation angle of the model is adjusted through a model inclination angle adjusting handle and a rotating shaft clamp, in the step, a simulated injection and production well is arranged in a simulated injection and production well hole, a pressure measuring device is arranged in a pressure measuring hole, the oil displacement effect and the flow rule of a water flooding process are simulated, and the mechanism of improving the petroleum extraction degree of a water flooding variable flow line under the condition of non-uniformity of a petroleum reservoir plane is researched. For example, in a physical simulation experiment of exchanging a transformation line of different types of reservoir layers, four strips with equal division are designed from high permeability to low permeability, the permeability is controlled by mixing the mixture ratio of different particle sizes of quartz sand, and a reverse nine-point well pattern model is arranged above the model; the left end and the right end can be used as pressure monitoring points. The injection end adopts a high-precision ISCO pump to provide displacement pressure, and the intermediate container is used for containing experimental fluid; the oil-water automatic metering is realized by the parallel oil-water separator at the extraction end, the monitoring photographing is realized in the whole process, the automatic acquisition can be realized by the digital balance, and the liquid output is accurately metered. And in the later stage, according to an oil reservoir adjustment development strategy, an experimental scheme is adjusted, the inverted nine-point well pattern is converted into a drainage well pattern, and corresponding front and back displacement characteristic changes of different types of oil reservoir layers are obtained through analysis of experimental results, so that a mechanism for improving recovery efficiency of the thick oil reservoir positive rhythm whole-packed oil reservoir is obtained.
Example 2:
Taking the formula shown in the table 1 as an example, quartz sand and clay with different particle sizes are weighed proportionally, and part of the quartz sand surface is subjected to wettability treatment according to requirements. According to the scheme, a sand filling model is manufactured, physical simulation experiments of interchange variable flow lines of different types of oil reservoir layers are carried out, four strips with equal design from high permeability to low permeability are filled with sand, and after the model is manufactured, the permeability of the strips with different permeability is measured by gas. The liquid permeability of each of the permeation strips was measured with fully saturated saline. And (3) using the model saturated oil and the inverted nine-point well pattern as simple injection and production units for simulating oil reservoirs by taking No. 2, no. 3, no. 5 and No. 8 wells as injection wells and No. 6 and No. 9 wells as production wells, wherein the left end and the right end of the model can be used as pressure monitoring points. The water is driven to contain 95% of water, and the extraction degree is calculated according to the numerical value of the measured oil water, so that a corresponding experimental curve is obtained; according to the oil reservoir development strategy, an experimental scheme is adjusted, the water injection multiple is 4.50PV when the water content of the model reaches 95%, and a water invasion 'dominant channel' appears, so that ineffective circulation of water flooding and high water consumption are caused; the saturation of the main streamline area and the non-main streamline area are obviously different once the high water consumption layer system is formed, so that the seepage resistance is uneven, the main streamline resistance is small, the tongue is protruded, the low-efficiency circulation is realized, and the high water consumption is realized; based on the conditions, streamline interchange is performed, seepage resistance in the water body is small, all directions are uniform, the low seepage direction resistance is large, injected water preferentially diffuses in the low seepage strip to form a high-pressure water body, the high-pressure water body is displaced towards the high seepage strip, and the sweep degree is improved. Experimental results: the recovery degree of the water free period is 28.06%, and the water content of the conventional water flooding is 58.32% of that of the conventional water flooding; after the replacement of the flow line, the recovery degree is improved by 14.2 percent; through an oil reservoir physical simulation experiment, a layer interchange transformation streamline is simulated, the water drive with high water consumption is regulated and controlled, and the characteristic change of displacement before and after the layer interchange of different types of oil reservoirs is analyzed and tested, so that a foundation is laid for the optimization research of the layer interchange mode.
Table 1 is the visual panel sand pack model formulation design:
Example 3:
Taking the formula shown in the table 2 as an example, quartz sand and clay with different particle groups are weighed proportionally, and the surface of the quartz sand is subjected to wettability treatment according to research requirements. According to the scheme, a simulation experiment of a high water consumption layer with evolution rule of a positive rhythm thick oil layer is manufactured, and the model is divided into three areas distributed in an L shape according to the actual permeability distribution condition of an oil reservoir and the similar principle. The hypertonic 3000-4500 mD area occupies 2/3 and is distributed on the left side and the upper part of the model; the medium permeation area is 1500-2200mD which occupies 1/6; the hypotonic region 500-900mD occupies 1/6 of the lower right part of the model; the left end and the right end of the model can be used as pressure monitoring points. The injection end adopts a high-precision ISCO pump to provide displacement pressure, and the intermediate container is used for containing experimental fluid; the oil-water automatic metering is realized by the parallel oil-water separator at the extraction end, the monitoring photographing is realized in the whole process, the automatic acquisition can be realized by the digital balance, and the liquid output is accurately metered. And reliable experimental data and experimental methods are provided for researching the evolution rule of the positive rhythm thick oil layer high water consumption layer.
Table 2 shows the formulation of the visual flat sand filling model:
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (9)
1. The visualized sintering-free flat sand filling model device is characterized by comprising a flat sand filling model, a model stamping device and a model fixing bracket;
The flat sand filling model comprises a flat model main body and a model upper cover plate; the plate model main body is a rectangular plate, and a groove is formed in the plate model main body; the upper cover plate of the model is arranged on the groove; the two sides of the flat sand filling model are respectively provided with an analog injection and production well hole or a pressure measuring hole; the upper cover plate of the model is provided with a simulated injection and production well hole;
The model stamping device comprises a motor, a stamping rotating shaft, a control box, a stamping steel plate and a stamping device shelf; the punching rotating shaft is connected with the motor and the control box respectively; the lower end of the stamping rotating shaft is fixedly connected with the stamping steel plate through a nut, and the rotating shaft is lifted to drive the stamping steel plate to move up and down; the stamping device shelf is fixed below the bracket; during stamping, the filled flat model main body is arranged on a shelf of a stamping device, and the upper model cover plate is arranged below the stamping steel plate;
The upper and lower sides of the flat sand filling model are respectively provided with a plurality of fixed steel plates and a connecting support frame, each steel plate is vertically arranged with the long side of the flat sand filling model, a plurality of bolt holes are formed in the steel plates, and the steel plates are fixed with the flat sand filling model through bolts; the connecting support frame is vertically connected with the outer side of the steel plate through bolts;
The model fixing support comprises an inclination angle adjusting handle, gear rotating shafts, a model fixing shelf and a support, wherein the gear rotating shafts are arranged on the left side and the right side of the upper end of the support, the model fixing shelf is arranged on the support, and the gear rotating shafts are connected with the inclination angle adjusting handle; the flat sand filling model is fixed on the model shelf by bolts.
2. The visual no-sinter slab sand filling model apparatus as claimed in claim 1, wherein the upper cover plate of the model is provided with an injection well.
3. The visual sintering-free flat sand filling model device according to claim 1, wherein the stamping steel plate is a rectangular steel plate, and the size of the steel plate is larger than that of the upper cover plate of the model; a plurality of bolt holes are arranged on the punching steel plate.
4. The visual sintering-free flat sand filling model device as claimed in claim 1, wherein rollers are arranged at the bottom of the model fixing support.
5. The visual no-sinter slab sand filling model apparatus as claimed in claim 1 wherein the simulated injection well bore is provided with a simulated injection well and the pressure tap is provided with a pressure measuring device.
6. The visual sintering-free flat sand-filling model apparatus as claimed in claim 1 wherein the well bores are respectively provided with coarse and fine screens.
7. The method of using a visual non-sintered flat panel sand pack mold apparatus as set forth in any one of claims 1-6, comprising the steps of:
A step of filling sand into a flat model, wherein the step is to divide the model into a plurality of strips according to the non-homogeneous requirement of the model plane, separate the strips by a baffle plate according to the design, fill one strip and fill the next strip, completely fill out the baffle plate, and perform preliminary leveling on the model;
Placing the filled model on a shelf of a model stamping device, fixing an upper cover plate of the model below a stamping steel plate, driving the cover plate to descend by a starting motor, adjusting the position of the model to be aligned with the cover plate, taking the cover plate off the stamping steel plate after the cover plate is pressed into a groove, and fixing the cover plate and the model through a fixed steel plate; adjusting the motor to the required power to drive the stamping steel plate to repeatedly stamp the model;
and placing the pressed model on a model fixing frame for experiment.
8. The method of claim 7, wherein the rotation angle of the model is adjusted by a model tilt adjustment knob, a gear shaft.
9. The method of claim 7, wherein a simulated injection well is installed in a simulated injection well, a pressure measuring device is installed in a pressure measuring hole, the oil displacement effect and the flow rule of a water flooding process are simulated, and the mechanism of improving the petroleum extraction degree by using a water flooding variable flow line under the condition of non-uniformity of a reservoir plane is studied.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526317U (en) * | 2009-11-04 | 2010-07-14 | 山东中石大石仪科技有限公司 | Visualized flat plate model with upper-coated pressure |
| CN103114850A (en) * | 2013-02-28 | 2013-05-22 | 西南石油大学 | Three-dimensional visual physical simulation experimental device |
| CN103161457A (en) * | 2013-02-28 | 2013-06-19 | 西南石油大学 | Experimental device of two-dimensional (2D) visualization slab model |
| CN103498668A (en) * | 2013-02-28 | 2014-01-08 | 西南石油大学 | Three-dimensional physical simulation experiment device |
| CN203669859U (en) * | 2014-01-06 | 2014-06-25 | 西南石油大学 | Three-dimensional physical simulation experiment device |
| CN204253024U (en) * | 2014-10-22 | 2015-04-08 | 中国石油大学(华东) | A kind of three-dimensional visualization physics displacement model detachably recycled |
| CN105239978A (en) * | 2015-10-30 | 2016-01-13 | 南通市飞宇石油科技开发有限公司 | Sand filling model pipe |
| CN107831052A (en) * | 2017-03-14 | 2018-03-23 | 中国石油化工股份有限公司 | A kind of special major diameter sandpack column device and method of physical simulation experiment |
| CN208252099U (en) * | 2018-05-23 | 2018-12-18 | 大庆东油睿佳石油科技有限公司 | A kind of visualization sand-filling apparatus for simulating rhythm type of law oil reservoir |
| CN209339937U (en) * | 2018-10-24 | 2019-09-03 | 西南石油大学 | A kind of novel probe method well pattern model waterflooding effect measuring device |
| CN110952964A (en) * | 2019-12-22 | 2020-04-03 | 中国海洋石油集团有限公司 | Horizontal well water injection profile control model experimental device |
| AU2020101365A4 (en) * | 2019-08-06 | 2020-08-20 | University Of Science And Technology Beijing | Device and method for measuring overburden of injected gas in cyclic gas injection development of condensate gas reservoir |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500031B (en) * | 2014-11-20 | 2017-03-29 | 中国科学院广州能源研究所 | Natural gas hydrate stratum drilling simulation device |
-
2020
- 2020-08-21 CN CN202010854232.9A patent/CN114075956B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526317U (en) * | 2009-11-04 | 2010-07-14 | 山东中石大石仪科技有限公司 | Visualized flat plate model with upper-coated pressure |
| CN103114850A (en) * | 2013-02-28 | 2013-05-22 | 西南石油大学 | Three-dimensional visual physical simulation experimental device |
| CN103161457A (en) * | 2013-02-28 | 2013-06-19 | 西南石油大学 | Experimental device of two-dimensional (2D) visualization slab model |
| CN103498668A (en) * | 2013-02-28 | 2014-01-08 | 西南石油大学 | Three-dimensional physical simulation experiment device |
| CN203669859U (en) * | 2014-01-06 | 2014-06-25 | 西南石油大学 | Three-dimensional physical simulation experiment device |
| CN204253024U (en) * | 2014-10-22 | 2015-04-08 | 中国石油大学(华东) | A kind of three-dimensional visualization physics displacement model detachably recycled |
| CN105239978A (en) * | 2015-10-30 | 2016-01-13 | 南通市飞宇石油科技开发有限公司 | Sand filling model pipe |
| CN107831052A (en) * | 2017-03-14 | 2018-03-23 | 中国石油化工股份有限公司 | A kind of special major diameter sandpack column device and method of physical simulation experiment |
| CN208252099U (en) * | 2018-05-23 | 2018-12-18 | 大庆东油睿佳石油科技有限公司 | A kind of visualization sand-filling apparatus for simulating rhythm type of law oil reservoir |
| CN209339937U (en) * | 2018-10-24 | 2019-09-03 | 西南石油大学 | A kind of novel probe method well pattern model waterflooding effect measuring device |
| AU2020101365A4 (en) * | 2019-08-06 | 2020-08-20 | University Of Science And Technology Beijing | Device and method for measuring overburden of injected gas in cyclic gas injection development of condensate gas reservoir |
| CN110952964A (en) * | 2019-12-22 | 2020-04-03 | 中国海洋石油集团有限公司 | Horizontal well water injection profile control model experimental device |
Non-Patent Citations (1)
| Title |
|---|
| 玻璃板填砂模型大孔道形成过程模拟实验;刘景亮;;油气地质与采收率;20080925(05);第95-97页 * |
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